Distribution method and system for midamble in space division multiple address (SDMA) system

A technique of training sequence and space division multiple access, applied in the transmission system, electrical components, etc., can solve the problems of SDMA user channel estimation quality degradation, midamble codes are easy to be polluted, etc., to reduce midamble code interference and improve estimation quality

Inactive Publication Date: 2010-07-07
ZTE CORP
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for distributing training sequences in a space division multiple access system, aiming to solve the problem in the prior art that the midamble codes of SDMA users are easily polluted and cause the channel estimation quality of each SDMA user to decline

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  • Distribution method and system for midamble in space division multiple address (SDMA) system
  • Distribution method and system for midamble in space division multiple address (SDMA) system
  • Distribution method and system for midamble in space division multiple address (SDMA) system

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[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] In the embodiment of the present invention, by assigning different midamble offsets to each SDMA user and indicating the assigned midamble offset to the SDMA users, the midamble code interference between each SDMA user is reduced, and the channel estimation quality of each SDMA user is improved.

[0021] figure 1 A training sequence allocation method in a space division multiple access system provided by an embodiment of the present invention is shown. In the embodiment of the present invention, the TD-SCDMA mobile communication system determines the midamble group according to the maximum ...

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Abstract

The invention is suitable for the field of mobile communication, and provides a distribution method and a system for midambles in a SDMA system. The method comprises the following steps: acquiring the number of SDMA users in the system; distributing different midamble deviations to each SDMA user according to the number of users; and indicating the distributed midamble deviations to the SDMA users. By using the method, different midamble deviations are distributed to the SDMA user, and the distributed midamble deviations are indicated to the SDMA users, thereby reducing the midamble code interferences among the SDMA users and enhancing the estimated quality of SDMA user channels.

Description

technical field [0001] The present invention relates to a mobile communication system, in particular to a method and system for distributing a training sequence (hereinafter referred to as midamble) in a space division multiple access system. Background technique [0002] SDMA (Spatial Division Multiplex Access, Space Division Multiple Access) technology utilizes space division among different users to form different channels, and spatially isolated users reuse the same physical resources, thereby achieving the purpose of improving the capacity of the mobile communication network. [0003] According to existing protocol requirements, in order to support multi-user HSDPA (High Speed ​​Downlink Packages Access) services, the HSDPA system generally adopts a default training sequence (hereinafter referred to as midamble) allocation scheme. The default midamble code allocation scheme means that the UE generates midamble offsets according to the allocated channelization codes, and...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/707
Inventor 王明华芮华赵娟娟史雯
Owner ZTE CORP
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